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37:
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422:. Though it was basically similar to other R-975 engines, and its compression ratio and supercharger gear ratio were unchanged from the R-975E-3, other improvements in the R9-A allowed it to achieve 525 hp (391 kW) for takeoff, surpassing any Wright version. A military version, the R-975-46, could reach 550 hp (410 kW), and was used in
242:
Wright gradually developed the R-975, at first using suffix letters to indicate successive versions. The original R-975 (or J-6-9) was rated for 300 hp (224 kW), while the R-975E of 1931 could do 330 hp (246 kW) thanks to an improved
411:, and other Allied armored vehicles based on these. Continental versions of the R-975 for armored vehicles included the R-975E-C2, the R-975-C1, and the R-975-C4. In contrast to the 7,000 built by Wright, Continental built over 53,000 R-975 engines.
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limit. An even more powerful version, the R-975E-3, was also introduced that year, with greater supercharging and a still higher RPM limit, and was progressively refined until the final model of 1935 could reach 450 hp (336 kW) for takeoff.
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built the R-975 under license as a powerplant for Allied tanks and other armored vehicles. Tens of thousands of engines were built for this purpose, dwarfing the R-975's usage in aircraft, where it was overshadowed by the similar
414:
When installed in a tank, the R-975 did not have the benefit of being cooled by air slipstream or propeller blast, so a cooling fan was attached to the power shaft and surrounded by a shroud to provide the same effect.
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494:
420 hp (310 kW) at 2,200 RPM up to 1,400 ft (430 m), 450 hp (340 kW) at 2,250 RPM for takeoff. Increased supercharging, slightly higher compression ratio.
247:
design. Wright later added numeric suffixes to show different power levels. The R-975E-1, introduced the same year as the R-975E, was rated at 365 hp (272 kW) thanks to
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162:. These engines had a displacement of about 975 cu in (15.98 L) and power ratings of 300–450 hp (220–340 kW). They were the largest members of the
3574:
2485:
506:
500 hp (370 kW) at 2,300 RPM at 4,000 ft (1,200 m), 525 hp (391 kW) at 2,300 RPM for takeoff. Continental's improved post-war version.
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in 49:20 hours, establishing a distance record of 5,011.8 miles (8,065.7 km), the first nonstop record flight to surpasse 5,000 mi (8,000 km).
264:
As the most powerful
Whirlwind to be produced, commercially it was also the most successful. It powered a wide variety of civil utility aircraft, such as the
3548:
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182:. After the war, Continental continued to produce its own versions of the R-975 into the 1950s. Some of these produced as much as 550 hp (410 kW).
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366:, are powered by nine-cylinder, 400-horsepower Wright Whirlwind aviation-type engines. These men are working on the engine wiring sub-assembly.
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1714:. This personal collection of museum aircraft engine photos includes a photo of the museum's R-975 under the section for the Hiller Museum.
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series. The J-6 family included varieties with five, seven, and nine cylinders. The nine-cylinder version was originally known as the
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tank destroyer which was claimed to have been the fastest tracked armored vehicle until the introduction of the turbine powered
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1574:. Transcribed from Wright Aeronautical documents by Robert J. Neal T; available from the Aircraft Engine Historical Society's
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process and, on one version only, the 9Qdr, an epicyclic output speed reducer. The R-975 was also produced under licence by
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was expanded to 5.0 in (12.7 cm) from the R-790's bore of 4.5 in (11.4 cm). While the R-790 was
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400 hp (300 kW) at 2,400 RPM. Built by
Continental Motors under license for use in armored vehicles.
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Like all the members of the J-6 Whirlwind family, the R-975 had larger cylinders than the R-790. The piston
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One notable record set by a Wright J-6 Whirlwind-powered aircraft occurred during July 28–30, 1931, when
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Wright's production of the R-975 ceased in 1945, with over 7,000 engines being produced by the company.
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Image
Galleries by Gary and Janet Brossett: National Museum of Naval Aviation in Pensacola, Florida
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420 hp (313 kW) at 2,200 RPM up to 1,400 ft (427 m); 450 hp (336 kW) at 2,250 RPM for takeoff
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Tank manufacture (Chrysler). M-3s, the twenty-eight ton "medium" tanks being turned out in
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Lake Boga
Catalina Museum (Lake Boga, Victoria, Australia) has a Continental Wright R-975.
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Image
Galleries by Gary and Janet Brossett: Pima Air and Space Museum in Tucson, Arizona
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Patton's
Vanguard: The United States Army Fourth Armored Division, By Don M. Fox. P.25
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378:, chose Continental Motors to build the R-975 under license as the engine for its
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330 hp (250 kW) at 2,000 RPM. Higher power from improved cylinder head.
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helicopters. Continental's production of R-975 engines continued into the 1950s.
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engine family to be produced commercially, and they were also the most numerous.
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Continental Motors, Teledyne
Continental, and Continental Aerospace Technologies
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Wright introduced the J-6 Whirlwind family in 1928 to replace the nine-cylinder
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A Grant tank R-975 engine being removed by Royal Army
Ordnance Corps mechanics
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After the war, Continental introduced its own R-975 version for aircraft, the
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276:. In addition, it powered U.S. military training aircraft including the
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347:. Pratt & Whitney R-985 outsold the Wright R-975 by a wide margin.
2439:
1533:"'Cape Cod's' Success Climaxes 5 Years [of] Bellanca Records"
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1036:
data sheet for the R-975E-3; dimensions from
Curtiss-Wright (1983).
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Curtiss-Wright CW-14 Travel Air/Speedwing/Sportsman Deluxe/Osprey
488:
365 hp (272 kW) at 2,100 RPM. Higher compression ratio.
295:
operated from U.S. Navy airships was also powered by the R-975.
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without modification apart from the use of
Hispano's patented
227:
of 5.5 in (14.0 cm) was unchanged, but the cylinder
220:; Wright later adopted this and dropped the J-6 nomenclature.
235:, the R-975, like the other J-6 engines, had a gear-driven
1914:. Available from the Aircraft Engine Historical Society's
1859:. Available from the Aircraft Engine Historical Society's
1048:
9-cylinder supercharged air-cooled radial piston engine
1930:
385:. Subsequently, the same engine was selected for the
216:
for short. The U.S. government designated it as the
1802:
Queensland Air Museum: Courtesy of Bruce Vander Mark
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1741:. This page has a photo of a Continental R-975-46A.
940:Some museums which have R-975 engines on display:
1843:, pp. 11, 13, 14, 16, 18, 19, archived from
1560:Summary of Wright Engine Shipments: 1920 to 1963
542:variant of the licence-built R-975 J-6 Whirlwind
536:variant of the licence-built R-975 J-6 Whirlwind
530:variant of the licence-built R-975 J-6 Whirlwind
524:variant of the licence-built R-975 J-6 Whirlwind
518:variant of the licence-built R-975 J-6 Whirlwind
335:However, the R-975 faced heavy competition from
44:A Continental-built R-975 from a Sherman tank
2819:
2479:
2039:
8:
1775:Queensland Air Museum: The Engine Collection
1198:Specifications for different R-975 variants
863:modification of M7 Priest and other vehicles
370:In 1939 the U.S. Army, which had been using
424:Piasecki's HUP Retriever and H-25 Army Mule
2826:
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1929:data sheets, all available from the FAA's
1892:Historical Engine Summary (Beginning 1930)
1692:. This page has a photo of a Wright R-975.
931:– anti-aircraft vehicle based on Grizzly I
854:– Canadian production of M4A1 Sherman tank
3575:Aircraft air-cooled radial piston engines
1502:
1500:
1476:
1474:
1450:
1448:
1412:
1410:
476:300 hp (220 kW) for airship use
147:was a series of nine-cylinder air-cooled
1196:
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1593:
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1537:The Sunday Morning Star, Wilmington, DE
1518:
1516:
1514:
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1462:
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1397:
470:300 hp (220 kW) at 2,000 RPM.
2017:Engine Data Sheets: US Aero Engines —
1871:. Warrendale, USA: SAE International.
1522:FAA Type Certificate Data Sheet TC 125
1490:
1488:
1486:
1468:FAA Type Certificate Data Sheet ATC 21
1438:
1436:
1434:
1432:
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1428:
1426:
1424:
1422:
1299:525 hp (391 kW) at 2,300 RPM
1296:500 hp (373 kW) at 2,300 RPM
1276:450 hp (336 kW) at 2,250 RPM
1273:420 hp (313 kW) at 2,200 RPM
1251:365 hp (272 kW) at 2,100 RPM
1229:330 hp (246 kW) at 2,000 RPM
26:
1599:FAA Type Certificate Data Sheet E-245
1506:Curtiss-Wright (1940), pp. 14, 16, 18
1494:FAA Type Certificate Data Sheet TC 87
1364:Pratt & Whitney R-985 Wasp Junior
268:, and various airliners, such as the
7:
630:Douglas RD-1 & C-21/OA-3 Dolphin
364:Detroit at the Chrysler tank arsenal
3549:US military gas turbine aeroengines
1023:Specifications (Whirlwind R-975E-3)
1977:Type Certificate Data Sheet TC 125
1941:Type Certificate Data Sheet ATC 21
25:
1995:Type Certificate Data Sheet E-245
1959:Type Certificate Data Sheet TC 87
1837:Wright Engines - Past and Present
973:National Museum of Naval Aviation
705:Lockheed Model 12B Electra Junior
512:Licence-built R-975 J-6 Whirlwind
397:(which used the M3 chassis), the
354:Production by Continental Motors
35:
1931:Regulatory and Guidance Library
1924:Federal Aviation Administration
1625:(in Portuguese). March 21, 2013
251:pistons and a slightly greater
185:The R-975 powered the American
796:Travel Air Type R Mystery Ship
695:Keystone-Loening K-84 Commuter
1:
3585:1920s aircraft piston engines
1619:"O bom caminhão a casa torna"
925:(S-53) – prototype helicopter
615:de Havilland DH.75B Hawk Moth
3554:Piston engine configurations
1869:Hispano Suiza in Aeronautics
1814:photo of a Continental R-975
1643:Curtiss-Wright (1940), p. 19
1480:Curtiss-Wright (1940), p. 14
1454:Curtiss-Wright (1940), p. 13
1416:Curtiss-Wright (1940), p. 11
750:Pitcairn PA-33 & 34/OP-2
1898:, p. 2, archived from
1442:Curtiss-Wright (1983), p. 2
945:Pima Air & Space Museum
821:Waco JWM and JYM mailplanes
610:Curtiss-Wright SNC-1 Falcon
585:Caribbean Traders Husky III
452:Fábrica Nacional de Motores
239:to boost its power output.
137:over 53,000 by Continental
3608:
1311:705 lb (320 kg)
1288:675 lb (306 kg)
1265:660 lb (299 kg)
1243:635 lb (288 kg)
861:armoured personnel carrier
765:Stearman Model 6C Cloudboy
745:Pitcairn-Cierva PCA-2/OP-1
430:Other license-built R-975s
393:medium tank, the Canadian
3536:
1175:0.43 hp/cu-in (19.7 kW/L)
987:Southern Museum of Flight
735:North American NA-64 Yale
575:Bellanca CH-300 Pacemaker
286:Curtiss-Wright SNC Falcon
180:Pratt & Whitney R-985
43:
34:
29:
1655:Wright R-975 Whirlwind 9
1381:List of aircraft engines
1015:has a Continental R-975.
997:has a Continental R-975.
983:has a Continental R-975.
929:Skink anti-aircraft tank
434:The engine was built in
3580:Wright aircraft engines
3520:W-configuration inline)
2849:H-configuration inline)
2837:piston aircraft engine
2711:Aircraft Diesel engines
1215:Supercharger gear ratio
1193:0.62 hp/lb (1.02 kW/kg)
1040:General characteristics
770:Stinson SM-1F Detroiter
645:Curtiss F9C Sparrowhawk
300:Russell Norton Boardman
290:Curtiss F9C Sparrowhawk
3500:VG (inverted-V inline)
2925:L (single-bank inline)
2897:IV (inverted-V inline)
2835:United States military
2522:horsepower designation
2506:Opposed piston engines
959:Hiller Aviation Museum
907:Piasecki HUP Retriever
897:M40 gun motor carriage
892:M12 gun motor carriage
842:
720:Noorduyn Norseman Mk.1
569:Beechcraft Staggerwing
552:Wright J-6-9 and R-975
374:radial engines in its
367:
343:and from their larger
326:Bellanca Special J-300
266:Beechcraft Staggerwing
200:Design and development
145:Wright R-975 Whirlwind
112:Piasecki HUP Retriever
96:Beechcraft Staggerwing
52:Air-cooled 9-cylinder
3477:V (inverted-V inline)
1867:Lage, Manual (2004).
1608:Lage (2004) pp152-163
1189:Power-to-weight ratio
1129:gear-driven, 10.15:1
1001:Queensland Air Museum
840:
361:
284:for the Army and the
3399:V (upright-V inline)
1850:on February 15, 2010
1753:Continental R-975-46
806:Vultee BT-15 Valiant
780:Townsend Thunderbird
730:North American NA-57
685:Ireland N-2B Neptune
675:Ford 4-AT-E Trimotor
635:Emsco B-5 Challenger
605:Curtiss-Wright CW-22
571:B17R, C17R, and D17R
282:Vultee BT-15 Valiant
274:Lockheed 10B Electra
270:Ford 4-AT-E Trimotor
135:over 7,000 by Wright
104:Vultee BT-15 Valiant
54:radial piston engine
1905:on October 31, 2010
1331:Related development
1199:
1075:972 cu in (15.93 L)
969:has a Wright R-975.
955:has a Wright R-975.
725:North American BT-9
580:Berliner-Joyce OJ-2
448:nitriding finishing
337:Pratt & Whitney
308:Floyd Bennett Field
306:flew non-stop from
278:North American BT-9
260:Operational history
233:naturally aspirated
156:Wright Aeronautical
100:North American BT-9
74:Wright Aeronautical
2839:designation system
2767:Inverted-V engines
1991:Continental R9-A:
1812:. This page has a
1581:2010-02-04 at the
1353:Comparable engines
1347:Wright J-6-7/R-760
1342:Wright J-6-5/R-540
1197:
1087:45.0 in (114.3 cm)
1081:43.0 in (109.2 cm)
936:Engines on display
919:self-propelled gun
843:
786:Travel Air B9-4000
715:Messerschmitt M 18
590:Cessna DC-6A Chief
539:Hispano-Suiza 9Qdr
402:self-propelled gun
368:
304:John Louis Polando
288:for the Navy. The
249:higher-compression
210:J-6 Whirlwind Nine
175:Continental Motors
91:Major applications
84:Continental Motors
3562:
3561:
2801:
2800:
2705:
2704:
2461:
2460:
2374:
2373:
1315:
1314:
1293:Continental R9-A
1212:Compression ratio
1206:Power, continuous
1180:Compression ratio
852:Grizzly I cruiser
833:Continental R-975
755:Ryan B-5 Brougham
533:Hispano-Suiza 9Qd
527:Hispano-Suiza 9Qc
521:Hispano-Suiza 9Qb
515:Hispano-Suiza 9Qa
444:Hispano-Wright 9Q
389:medium tank, the
372:Continental R-670
341:R-985 Wasp Junior
141:
140:
16:(Redirected from
3597:
2828:
2821:
2814:
2805:
2517:
2498:aircraft engines
2488:
2481:
2474:
2465:
2200:Whirlwind family
2196:
2062:aircraft engines
2048:
2041:
2034:
2025:
2005:
2004:
2002:
1987:
1986:
1984:
1969:
1968:
1966:
1951:
1950:
1948:
1927:type certificate
1913:
1912:
1910:
1904:
1897:
1882:
1858:
1857:
1855:
1849:
1842:
1817:
1811:
1810:
1809:
1797:
1791:
1789:
1788:
1787:
1778:, archived from
1770:
1764:
1762:
1761:
1760:
1748:
1742:
1740:
1739:
1738:
1729:, archived from
1721:
1715:
1713:
1712:
1711:
1704:Aircraft Engines
1699:
1693:
1691:
1690:
1689:
1680:, archived from
1672:
1666:
1664:
1663:
1662:
1650:
1644:
1641:
1635:
1634:
1632:
1630:
1615:
1609:
1606:
1600:
1597:
1586:
1573:
1572:
1570:
1565:
1555:
1549:
1548:
1546:
1544:
1539:. August 2, 1931
1529:
1523:
1520:
1507:
1504:
1495:
1492:
1481:
1478:
1469:
1466:
1455:
1452:
1443:
1440:
1417:
1414:
1405:
1402:
1337:Wright J-5/R-790
1324:Wright Whirlwind
1200:
1034:type certificate
791:Travel Air 6000B
700:Koolhoven F.K.56
680:Interstate XTD3R
650:Fokker Universal
595:Curtiss Kingbird
564:Avro Anson Mk IV
509:Hispano-Suiza 9Q
503:Continental R9-A
440:Hispano-Suiza 9Q
316:Istanbul, Turkey
293:parasite fighter
164:Wright Whirlwind
152:aircraft engines
132:
92:
62:
39:
30:R-975 Whirlwind
27:
21:
3607:
3606:
3600:
3599:
3598:
3596:
3595:
3594:
3565:
3564:
3563:
3558:
3532:
3519:
3512:
3494:
3471:
3393:
3145:
2972:
2919:
2891:
2848:
2841:
2832:
2802:
2797:
2779:
2761:
2733:
2724:CD-200 (TD-300)
2701:
2619:By displacement
2613:
2521:
2508:
2500:
2492:
2462:
2457:
2434:
2407:
2370:
2344:
2269:
2187:
2128:
2064:
2052:
2014:
2009:
2000:
1998:
1992:
1982:
1980:
1974:
1964:
1962:
1956:
1946:
1944:
1938:
1908:
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1902:
1895:
1885:
1879:
1866:
1853:
1851:
1847:
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1696:
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1642:
1638:
1628:
1626:
1617:
1616:
1612:
1607:
1603:
1598:
1589:
1583:Wayback Machine
1568:
1566:
1563:
1557:
1556:
1552:
1542:
1540:
1531:
1530:
1526:
1521:
1510:
1505:
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1493:
1484:
1479:
1472:
1467:
1458:
1453:
1446:
1441:
1420:
1415:
1408:
1403:
1399:
1394:
1389:
1369:Bristol Mercury
1320:
1160:
1103:
1096:675 lb (306 kg)
1066:5.5 in (140 mm)
1057:5.0 in (127 mm)
1042:
1025:
938:
923:Sikorsky XHJS-1
835:
830:
554:
549:
464:
432:
356:
262:
202:
136:
130:
114:
110:
108:M4 Sherman tank
106:
102:
98:
90:
61:National origin
60:
23:
22:
15:
12:
11:
5:
3605:
3604:
3601:
3593:
3592:
3587:
3582:
3577:
3567:
3566:
3560:
3559:
3557:
3556:
3551:
3546:
3537:
3534:
3533:
3531:
3530:
3524:
3522:
3518:W (three-bank
3514:
3513:
3511:
3510:
3504:
3502:
3496:
3495:
3493:
3492:
3487:
3481:
3479:
3473:
3472:
3470:
3469:
3464:
3459:
3454:
3449:
3444:
3439:
3434:
3429:
3424:
3419:
3414:
3409:
3403:
3401:
3395:
3394:
3392:
3391:
3386:
3381:
3376:
3371:
3366:
3361:
3356:
3351:
3346:
3341:
3336:
3331:
3326:
3321:
3316:
3311:
3306:
3301:
3296:
3291:
3286:
3281:
3276:
3271:
3266:
3261:
3256:
3251:
3246:
3241:
3236:
3231:
3226:
3221:
3216:
3211:
3206:
3201:
3196:
3191:
3186:
3181:
3176:
3171:
3166:
3161:
3155:
3153:
3147:
3146:
3144:
3143:
3138:
3133:
3128:
3123:
3118:
3113:
3108:
3103:
3098:
3093:
3088:
3083:
3078:
3073:
3068:
3063:
3058:
3053:
3048:
3043:
3038:
3033:
3028:
3023:
3018:
3013:
3008:
3003:
2998:
2993:
2988:
2982:
2980:
2974:
2973:
2971:
2970:
2965:
2960:
2955:
2950:
2945:
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2935:
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2921:
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2918:
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2912:
2907:
2901:
2899:
2893:
2892:
2890:
2889:
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2879:
2874:
2869:
2864:
2859:
2853:
2851:
2843:
2842:
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2830:
2823:
2816:
2808:
2799:
2798:
2796:
2795:
2789:
2787:
2781:
2780:
2778:
2777:
2771:
2769:
2763:
2762:
2760:
2759:
2754:
2749:
2743:
2741:
2739:Radial engines
2735:
2734:
2732:
2731:
2726:
2721:
2715:
2713:
2707:
2706:
2703:
2702:
2700:
2699:
2694:
2689:
2684:
2679:
2674:
2669:
2664:
2659:
2654:
2649:
2644:
2639:
2634:
2629:
2623:
2621:
2615:
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2611:
2606:
2601:
2596:
2591:
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2581:
2576:
2571:
2566:
2561:
2556:
2551:
2546:
2541:
2536:
2531:
2525:
2523:
2514:
2502:
2501:
2493:
2491:
2490:
2483:
2476:
2468:
2459:
2458:
2456:
2455:
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2444:
2442:
2436:
2435:
2433:
2432:
2427:
2421:
2419:
2409:
2408:
2406:
2405:
2400:
2395:
2390:
2384:
2382:
2376:
2375:
2372:
2371:
2369:
2368:
2366:R-2160 Tornado
2363:
2358:
2352:
2350:
2346:
2345:
2343:
2342:
2337:
2332:
2327:
2322:
2317:
2311:
2310:
2305:
2303:Duplex-Cyclone
2300:
2295:
2290:
2285:
2279:
2277:
2275:Cyclone family
2271:
2270:
2268:
2267:
2262:
2257:
2252:
2247:
2242:
2236:
2235:
2230:
2225:
2220:
2215:
2210:
2204:
2202:
2193:
2192:Wright radials
2189:
2188:
2186:
2185:
2180:
2175:
2170:
2165:
2160:
2155:
2150:
2145:
2139:
2137:
2130:
2129:
2127:
2126:
2121:
2116:
2111:
2106:
2101:
2096:
2091:
2086:
2081:
2075:
2073:
2071:inline engines
2066:
2065:
2053:
2051:
2050:
2043:
2036:
2028:
2022:
2021:
2013:
2012:External links
2010:
2008:
2007:
1989:
1971:
1953:
1922:The following
1920:
1919:
1916:reference page
1887:Curtiss-Wright
1883:
1878:978-0768009972
1877:
1864:
1861:reference page
1832:Curtiss-Wright
1827:
1825:
1822:
1819:
1818:
1792:
1765:
1743:
1716:
1694:
1667:
1645:
1636:
1623:Jornal O Globo
1610:
1601:
1587:
1576:reference page
1550:
1524:
1508:
1496:
1482:
1470:
1456:
1444:
1418:
1406:
1396:
1395:
1393:
1390:
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1384:
1383:
1372:
1371:
1366:
1361:
1359:Alvis Leonides
1350:
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1219:
1216:
1213:
1210:
1209:Power, takeoff
1207:
1204:
1195:
1194:
1185:
1176:
1171:Specific power
1167:
1159:
1156:
1155:
1154:
1149:Reduction gear
1145:
1136:
1121:
1116:per cylinder,
1102:
1099:
1098:
1097:
1088:
1082:
1076:
1067:
1058:
1049:
1041:
1038:
1024:
1021:
1020:
1019:
1016:
998:
984:
970:
956:
937:
934:
933:
932:
926:
920:
914:
909:
904:
902:McDonnell XV-1
899:
894:
889:
884:
879:
874:
869:
864:
855:
849:
834:
831:
829:
828:
823:
818:
813:
808:
803:
798:
793:
788:
783:
777:
772:
767:
762:
760:Spartan C4-300
757:
752:
747:
742:
740:Pitcairn PA-19
737:
732:
727:
722:
717:
712:
710:McDonnell XV-1
707:
702:
697:
692:
687:
682:
677:
672:
667:
662:
657:
652:
647:
642:
637:
632:
627:
625:Dewoitine D.35
622:
620:Dewoitine D.31
617:
612:
607:
602:
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592:
587:
582:
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572:
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531:
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495:
492:
489:
486:
483:
480:
477:
474:
471:
468:
463:
460:
431:
428:
409:tank destroyer
355:
352:
261:
258:
201:
198:
196:in the 1980s.
160:Curtiss-Wright
139:
138:
133:
127:
126:
123:
119:
118:
93:
87:
86:
81:
77:
76:
71:
67:
66:
65:United States
63:
57:
56:
50:
46:
45:
41:
40:
32:
31:
24:
14:
13:
10:
9:
6:
4:
3:
2:
3603:
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2847:H (four-bank
2844:
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2824:
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2140:
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2131:
2125:
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2115:
2112:
2110:
2107:
2105:
2102:
2100:
2097:
2095:
2092:
2090:
2087:
2085:
2082:
2080:
2077:
2076:
2074:
2072:
2067:
2063:
2060:
2056:
2049:
2044:
2042:
2037:
2035:
2030:
2029:
2026:
2020:
2016:
2015:
2011:
1997:
1996:
1990:
1979:
1978:
1972:
1961:
1960:
1954:
1943:
1942:
1936:
1935:
1934:
1932:
1928:
1925:
1917:
1901:
1894:
1893:
1888:
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1846:
1839:
1838:
1833:
1829:
1828:
1823:
1815:
1804:
1803:
1796:
1793:
1782:on 2009-10-04
1781:
1777:
1776:
1769:
1766:
1755:
1754:
1747:
1744:
1733:on 2009-08-27
1732:
1728:
1727:
1720:
1717:
1706:
1705:
1698:
1695:
1684:on 2009-08-27
1683:
1679:
1678:
1671:
1668:
1657:
1656:
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1471:
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1413:
1411:
1407:
1401:
1398:
1391:
1386:
1382:
1379:
1378:
1377:
1376:
1375:Related lists
1370:
1367:
1365:
1362:
1360:
1357:
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1355:
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1348:
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1340:
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1284:
1281:
1278:
1275:
1272:
1269:
1268:
1264:
1261:
1258:
1255:
1253:
1250:
1247:
1246:
1242:
1239:
1236:
1233:
1231:
1228:
1225:
1224:
1220:
1218:Octane rating
1217:
1214:
1211:
1208:
1205:
1202:
1201:
1192:
1190:
1186:
1183:
1181:
1177:
1174:
1172:
1168:
1165:
1164:Power output:
1162:
1161:
1157:
1152:
1150:
1146:
1144:
1140:
1137:
1135:
1132:
1128:
1126:
1122:
1119:
1115:
1111:
1109:
1105:
1104:
1100:
1095:
1093:
1089:
1086:
1083:
1080:
1077:
1074:
1072:
1068:
1065:
1063:
1059:
1056:
1054:
1050:
1047:
1044:
1043:
1039:
1037:
1035:
1032:
1029:
1022:
1017:
1014:
1010:
1006:
1002:
999:
996:
992:
988:
985:
982:
978:
974:
971:
968:
964:
960:
957:
954:
950:
946:
943:
942:
941:
935:
930:
927:
924:
921:
918:
915:
913:
910:
908:
905:
903:
900:
898:
895:
893:
890:
888:
885:
883:
880:
878:
875:
873:
870:
868:
867:Kellett XR-10
865:
862:
859:
856:
853:
850:
848:
845:
844:
839:
832:
827:
824:
822:
819:
817:
814:
812:
809:
807:
804:
802:
799:
797:
794:
792:
789:
787:
784:
781:
778:
776:
773:
771:
768:
766:
763:
761:
758:
756:
753:
751:
748:
746:
743:
741:
738:
736:
733:
731:
728:
726:
723:
721:
718:
716:
713:
711:
708:
706:
703:
701:
698:
696:
693:
691:
688:
686:
683:
681:
678:
676:
673:
671:
670:Fokker T.VIII
668:
666:
663:
661:
658:
656:
653:
651:
648:
646:
643:
641:
638:
636:
633:
631:
628:
626:
623:
621:
618:
616:
613:
611:
608:
606:
603:
601:
598:
596:
593:
591:
588:
586:
583:
581:
578:
576:
573:
570:
567:
565:
562:
560:
557:
556:
551:
546:
541:
538:
535:
532:
529:
526:
523:
520:
517:
514:
511:
508:
505:
502:
499:
496:
493:
490:
487:
484:
481:
478:
475:
472:
469:
467:J-6-9 (R-975)
466:
465:
461:
459:
457:
453:
449:
445:
441:
437:
429:
427:
425:
421:
416:
412:
410:
407:
403:
400:
396:
392:
388:
384:
381:
377:
373:
365:
360:
353:
351:
348:
346:
342:
338:
333:
331:
327:
323:
322:
317:
313:
309:
305:
301:
296:
294:
291:
287:
283:
279:
275:
271:
267:
259:
257:
254:
250:
246:
245:cylinder head
240:
238:
234:
230:
226:
221:
219:
215:
211:
207:
199:
197:
195:
191:
188:
183:
181:
176:
172:
167:
165:
161:
157:
154:built by the
153:
150:
146:
134:
129:
128:
124:
121:
120:
117:
113:
109:
105:
101:
97:
94:
89:
88:
85:
82:
79:
78:
75:
72:
70:Manufacturer
69:
68:
64:
59:
58:
55:
51:
48:
47:
42:
38:
33:
28:
19:
3590:Tank engines
3540:
3263:
2756:
2609:Tiara series
2298:Twin Cyclone
2254:
2232:
2001:December 15,
1999:, retrieved
1994:
1983:December 14,
1981:, retrieved
1976:
1965:December 14,
1963:, retrieved
1958:
1947:December 14,
1945:, retrieved
1940:
1921:
1909:December 14,
1907:, retrieved
1900:the original
1891:
1868:
1854:December 14,
1852:, retrieved
1845:the original
1836:
1824:Bibliography
1806:, retrieved
1801:
1795:
1784:, retrieved
1780:the original
1774:
1768:
1757:, retrieved
1752:
1746:
1735:, retrieved
1731:the original
1725:
1719:
1708:, retrieved
1703:
1697:
1686:, retrieved
1682:the original
1676:
1670:
1659:, retrieved
1654:
1648:
1639:
1627:. Retrieved
1622:
1613:
1604:
1569:December 15,
1567:, retrieved
1559:
1553:
1543:September 4,
1541:. Retrieved
1536:
1527:
1400:
1374:
1373:
1352:
1351:
1330:
1329:
1187:
1178:
1169:
1163:
1153:Direct drive
1147:
1138:
1125:Supercharger
1123:
1106:
1090:
1084:
1078:
1071:Displacement
1069:
1060:
1051:
1045:
1027:
1026:
939:
782:(as rebuilt)
690:Keystone XOK
665:Fokker C.XIV
640:Goodyear K-1
547:Applications
443:
439:
433:
419:
417:
413:
383:medium tanks
369:
349:
334:
320:
297:
263:
241:
237:supercharger
222:
217:
213:
209:
203:
187:World War II
184:
171:World War II
168:
158:division of
144:
142:
131:Number built
18:Wright R-975
2978:O (opposed)
2417:turboshafts
2104:T-4 Tornado
2099:T-3 Tornado
2094:T-2 Tornado
2089:T-1 Tornado
2084:Gipsy L-320
1221:Dry weight
1158:Performance
887:M18 Hellcat
847:Beech D-18C
406:M18 Hellcat
376:light tanks
345:R-1340 Wasp
312:Long Island
190:M18 Hellcat
125:1929-1950s
116:M18 Hellcat
3569:Categories
3490:V-1650 (L)
3452:V-1650 (P)
3174:R-370 (LB)
3151:R (radial)
2785:Turboprops
2520:By company
2413:Turboprops
2308:Cyclone 22
2019:R-975 page
1973:R-975E-3:
1955:R-975E-1:
1808:2009-12-15
1786:2009-12-15
1759:2009-12-16
1737:2009-12-15
1710:2009-12-17
1688:2009-12-15
1661:2009-12-25
1629:October 1,
1387:References
1139:Fuel type:
1134:gear ratio
1108:Valvetrain
1101:Components
1092:Dry weight
1009:Queensland
991:Birmingham
967:California
963:San Carlos
877:M4 Sherman
826:M4 Sherman
775:Timm T-840
660:Fokker C-7
655:Fokker C-5
391:M4 Sherman
328:high-wing
3541:See also:
3204:R-540 (K)
3199:R-540 (W)
3179:R-370 (K)
3121:O-540 (L)
3116:O-540 (F)
3081:O-360 (L)
3076:O-360 (C)
3046:O-200 (F)
3041:O-200 (C)
2380:Turbojets
2288:Cyclone 9
2283:Cyclone 7
2133:Lawrance
1270:R-975E-3
1248:R-975E-1
1120:-actuated
1085:Diameter:
1028:Data from
1013:Australia
1005:Caloundra
977:Pensacola
882:M7 Priest
497:R-975E-C2
399:M7 Priest
330:monoplane
194:M1 Abrams
122:Produced
80:Built by
2511:Gasoline
2356:L-3 Gale
2059:Lawrance
1937:R-975E:
1889:(1983),
1834:(1940),
1579:Archived
1318:See also
1131:impeller
912:Ram tank
858:Kangaroo
816:Waco JYO
811:Waco JTO
491:R-975E-3
485:R-975E-1
473:R-975-20
462:Variants
395:Ram tank
321:Cape Cod
272:and the
3508:VG-1410
3389:XR-7755
2915:IV-2220
2910:IV-2040
2905:IV-1430
2882:XH-3730
2877:XH-3130
2872:XH-2600
2867:XH-2470
2862:XH-2240
2775:XI-1430
2440:Ramjets
2293:Cyclone
2135:radials
2119:IV-1560
2114:IV-1460
2069:Wright
1305:10.15:1
1282:10.15:1
1226:R-975E
1118:pushrod
1079:Length:
995:Alabama
981:Florida
953:Arizona
801:VL Pyry
559:ASJA L2
438:as the
318:in the
169:During
3544:X-1800
3528:W-2779
3467:V-3420
3462:V-1950
3457:V-1710
3447:V-1570
3442:V-1560
3437:V-1510
3432:V-1460
3427:V-1440
3422:V-1400
3417:V-1237
3412:V-1150
3384:R-4360
3379:R-4090
3374:R-3350
3369:R-2800
3364:R-2600
3359:R-2180
3354:R-2160
3349:R-2060
3344:R-2000
3339:R-1860
3334:R-1830
3329:R-1820
3324:R-1750
3319:R-1690
3314:R-1670
3309:R-1640
3304:R-1535
3299:R-1510
3294:R-1454
3289:R-1340
3284:R-1300
3279:R-1044
3269:DR-980
3141:O-1230
2887:H-4070
2857:H-1640
2793:TP-500
2729:CD-300
2719:CD-155
2697:IO-550
2677:IO-370
2672:IO-368
2667:IO-360
2662:IO-346
2361:R-1200
2349:Others
2340:R-4090
2335:R-3350
2330:R-2600
2325:R-1820
2320:R-1750
2315:R-1300
2265:R-1670
2260:R-1510
2124:V-1950
2055:Wright
1875:
1326:series
1203:Engine
1143:octane
1114:valves
1062:Stroke
949:Tucson
917:Sexton
872:M3 Lee
479:R-975E
456:Brazil
404:, the
387:M3 Lee
225:stroke
149:radial
3485:V-770
3407:V-720
3274:R-985
3264:R-975
3259:R-915
3254:R-830
3249:R-790
3244:R-760
3239:R-755
3234:R-720
3229:R-680
3224:R-670
3219:R-600
3214:R-550
3209:R-545
3194:R-500
3189:R-440
3184:R-420
3169:R-270
3164:R-265
3159:R-250
3136:O-805
3131:O-580
3126:O-550
3111:O-520
3106:O-480
3101:O-470
3096:O-435
3091:O-425
3086:O-405
3071:O-335
3066:O-300
3061:O-290
3056:O-235
3051:O-205
3036:O-190
3031:O-180
3026:O-175
3021:O-170
3016:O-150
3011:O-145
3006:O-100
2968:L-825
2963:L-510
2958:L-440
2953:L-410
2948:L-390
2943:L-375
2938:L-365
2933:L-330
2757:R-975
2752:R-670
2747:R-544
2692:O-526
2687:O-520
2682:O-470
2657:O-300
2652:O-280
2647:O-240
2642:O-205
2637:O-200
2632:O-190
2627:O-170
2255:R-975
2250:R-790
2245:R-760
2240:R-540
2233:J-6-9
2228:J-6-7
2223:J-6-5
2109:V-720
1903:(PDF)
1896:(PDF)
1848:(PDF)
1841:(PDF)
1564:(PDF)
1392:Notes
1302:6.3:1
1279:6.3:1
1259:7.8:1
1256:6.1:1
1237:7.8:1
1234:5.1:1
1184:6.3:1
1046:Type:
975:near
436:Spain
310:, on
218:R-975
214:J-6-9
212:, or
206:R-790
49:Type
3001:O-90
2996:O-45
2991:O-40
2986:O-15
2604:E225
2599:E185
2594:E165
2589:C145
2584:C140
2579:C125
2574:C115
2453:RJ55
2448:RJ47
2057:and
2003:2009
1985:2009
1967:2009
1949:2009
1911:2009
1873:ISBN
1856:2009
1631:2018
1571:2009
1545:2013
1053:Bore
420:R9-A
324:, a
302:and
280:and
229:bore
143:The
2569:C90
2564:C85
2559:C75
2554:A80
2549:A75
2544:A70
2539:A65
2534:A50
2529:A40
2430:T49
2425:T35
2403:J67
2398:J65
2393:J61
2388:J59
2218:J-5
2213:J-4
2208:J-3
2183:L-5
2178:L-4
2173:L-3
2168:L-2
2163:L-1
2158:J-2
2153:J-1
2148:C-2
2143:A-3
1141:80
1031:FAA
1003:in
989:in
961:in
947:in
454:in
442:or
339:'s
314:to
253:RPM
3571::
1933::
1621:.
1590:^
1535:.
1511:^
1499:^
1485:^
1473:^
1459:^
1447:^
1421:^
1409:^
1308:91
1285:80
1262:73
1240:73
1112:2
1011:,
1007:,
993:,
979:,
965:,
951:,
458:.
380:M2
173:,
2827:e
2820:t
2813:v
2513:)
2509:(
2487:e
2480:t
2473:v
2415:/
2079:E
2047:e
2040:t
2033:v
2006:.
1988:.
1970:.
1952:.
1918:.
1881:.
1863:.
1816:.
1790:.
1763:.
1665:.
1633:.
1585:.
1547:.
1191::
1182::
1173::
1151::
1127::
1110::
1094::
1073::
1064::
1055::
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
